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Helios Evolution 120.

Pitsmoor Col

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Does anyone know the focal length of the Helios Evolution 120 ? thank you. 

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I believe the Helios Evostar 120 is f/8.3 which would make it 996mm. A 10mm eyepiece should give 99.6x (call it 100 lol).

Edited by Nightspore
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